Oil extraction from Scenedesmus obliquus using a continuous microwave system—Design, optimization and quality characterization
Abstract
A 1.2 kW, 2450 MHz resonant continuous microwave processing system was designed and optimized for oil extraction from green algae (Scenedesmus obliquus). Algae-water suspension (1:1 w/w) was heated to 80 and 95°C, and subjected to extraction for up to 30 min. Maximum oil yield was achieved at 95°C and 30 min. The microwave system extracted 76-77% of total recoverable oil at 20-30 min and 95°C, compared to only 43-47% for water bath control. Extraction time and temperature had significant influence (p<0.0001) on extraction yield. Oil analysis indicated that microwaves extracted oil containing higher percentages of unsaturated and essential fatty acids (indicating higher quality). This study validates for the first time the efficiency of a continuous microwave system for extraction of lipids from algae. Higher oil yields, faster extraction rates and superior oil quality demonstrate this system's feasibility for oil extraction from a variety of feedstock.
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An advantage of MAE is that it is an economical and environmentally friendly process because of reduced process time and solvent amount.
“An advantage of MAE is that it is economical and environmentally friendly process because of the reduced process time and solvent amount [73].”
From Overview on the Application of Modern Methods for the Extraction of Bioactive Compounds from Marine Macroalgae (2018) · cites this paper as [73]
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“…and its high commercial value, it is important to develop new methods and modify the existing methods for neem oil extraction that significantly reduce the extraction time, organic solvent consumption rate, and operating costs as well as improve extraction efficiency and maintain oil quality [23].”
Method
- Authors
- Balasubramanian, S., Allen, J. D., Kanitkar, A., & Boldor, D.
- Affiliations
- Louisiana State University (US)
- Corresponding author
- Boldor, Dorin
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2011-02
- Volume
- 102
- Issue
- 3
- Pages
- 3396-3403
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W1977821286
- Cited by
- 283
- References
- 45
- Citations by year
- 2026: 9 · 2025: 4 · 2024: 15 · 2023: 14 · 2022: 12 · 2021: 21 · 2020: 24 · 2019: 24 · 2018: 30 · 2017: 20 · 2016: 27 · 2015: 21 · 2014: 20 · 2013: 22 · 2012: 16
- FWCI
- 6.27
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Civil War Book Review (submittedVersion)
- Funders
- LSU Agricultural Center
- LSU Biological and Agricultural Engineering Department
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Physical Sciences › Chemistry › Organic Chemistry › Microwave-Assisted Synthesis and Applications
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
- Keywords
- Scenedesmus obliquus, microwave-assisted extraction, microalgal lipids, extraction temperature optimization, extraction time, oil yield, fatty acid composition, unsaturated fatty acids, essential fatty acids, oil quality
- MeSH terms
- Chlorophyta, Equipment Design, Chemical Fractionation, Hot Temperature, Microwaves, Oils, Equipment Failure Analysis
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